1222323020 has 12 divisors (see below), whose sum is σ = 2566878384. Its totient is φ = 488929200.

The previous prime is 1222323019. The next prime is 1222323079. The reversal of 1222323020 is 203232221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222323020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30558056 + ... + 30558095.

It is an arithmetic number, because the mean of its divisors is an integer number (213906532).

Almost surely, 2^1222323020 is an apocalyptic number.

1222323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222323020 is an abundant number, since it is smaller than the sum of its proper divisors (1344555364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222323020 is a wasteful number, since it uses less digits than its factorization.

1222323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61116160 (or 61116158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1222323020 is about 34961.7365129365. The cubic root of 1222323020 is about 1069.2075012209.

Adding to 1222323020 its reverse (203232221), we get a palindrome (1425555241).

The spelling of 1222323020 in words is "one billion, two hundred twenty-two million, three hundred twenty-three thousand, twenty".